4M – SPY SCIENCE/SECRET MESSAGEHave fun communicating secret messages with your friends like spies do. Send top secrets in morse code, invisible writers, x ray secret notes, and more. Learn common secret codes used in the spy world. SKU: 3295 Categories: 4M, Kids Labs Description 8+Related products 4M – DIG A TRICERATOPS SKELETONContains a triceratops skeleton about 20 cm tall when assembled. 4M – SOLAR SYSTEM PLANETARIUMBuild your own 30cm glow in the dark solar system planetarium model. Assemble, paint, and highlight with glow effects. Watch it glow in the dark as if it were in space. 4M – WEATHER STATIONObserve and record the weather with your own multi-functional weather station. The kit features a wind vane and anemometer, a thermometer, and a rain gauge. Also experiment with the greenhouse effect and create a terrarium in a bottlw.